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Este artículo surge de la tesis Lectura en pantallas: prácticas de lectura en soportes digitales desde la mirada de los adolescentes para la Maestría en Tecnología Educativa de la Universidad de Buenos Aires (Argentina). El principal objetivo fue dar cuenta de lo que sucede en cuanto a las prácticas de lectura en pantallas y de las representaciones que tienen los jóvenes sobre este tipo de procedimiento. Se apuntó a realizar un abordaje cualitativo, desde una lógica inductiva, que buscó la generación de categorías de análisis que permitiesen conocer el fenómeno en profundidad. Se utilizó el diseño de teoría fundamentada, el método comparativo constante y el muestreo teórico. Se tomó como unidad de análisis una muestra intencional de alumnos de quinto y sexto año de una escuela secundaria de Buenos Aires y, a través de entrevistas en profundidad y observación de prácticas lectoras, se apuntó a comprender lo que los jóvenes relatan sobre sus mecanismos de lectura para caracterizar particularidades sobre este proceso y así construir nuevos marcos conceptuales para brindar herramientas teóricas que permitan intervenir y modificar los procedimientos ligados al tema.

ABSTRACT This study aimed to evaluate the efficiency of anaerobic digestion and biogas production by manure from pig supplemented with ractopamine over different periods. We used manure of 50 finishing pigs according to the following diets: without supplementation and supplemented with 20-ppm ractopamine during 7, 14, 21, 28 and 35 days pre-slaughter. Continuous bench biodigesters were used in the experiment. We measured biogas production and made analyses of total (TS) and volatile solids (VS), pH, total phosphorus (total P), total nitrogen (total N) and ammoniacal nitrogen (ammoniacal N) in samples of manure, affluent and effluent from biodigesters. The pH and ammoniacal N as indicator parameters of the process balance and stability were satisfactory. Moreover, there was no difference in the reduction of TS and VS (50.04 and 56.51%, respectively). Manure of animals supplemented with ractopamine for 35 and 28 days presented higher biogas production (0.0722 and 0.0603 m3 kg−1, respectively). The supplementation with 20-ppm ractopamine for finishing pigs from 7 to 35 days does not present collapse risks for the anaerobic biodigestion process.

A imunoterapia é uma estratégia promissora para o tratamento do câncer. E o mesocarpo obtido do fruto do Babaçu (Attalea speciosa) demonstra atividade imunomoduladora com relevantes pers- pectivas na atividade antitumoral. O objetivo deste trabalho foi avaliar resposta imune antitumoral contra células tumorais pré-tratadas com Extrato Aquoso de Mesocarpo de Babaçu (EAMB). As células tumorais MCF-7 foram ressuspensas no EAMB para determinação da viabilidade celular. Posteriormente, os ani- mais foram inoculados com MCF-7 ressuspensas em salina ou EAMB, por via subcutânea, nos dias 0, 5 e 10. No dia 15, os animais foram eutanasiados e o baço retirado cirurgicamente. Os esplenócitos foram caracterizados por fenotipagem com anticorpos monoclonais para células aderentes e não aderentes por citometria de fluxo. Parte das células não aderentes foram usadas para co-cultura com MCF-7 por 5 dias e depois feita fenotipagem dos esplenócitos. A viabilidade celular foi de 97% e não houve diferença no peso do baço entre os grupos. A frequência de células aderentes que expressam os marcadores IA/IE e Ly-6G foram maiores no grupo MCF-7 pré-tratadas com EAMB quando comparado com o controle. Na fe- notipagem de células não aderentes foi observada uma proporção de 1:2 linfócitos T CD8+ para linfócitos T CD4+. Contudo, após 5 dias de co-cultura com MCF-7, os esplenócitos obtidos dos animais estimulados com MCF-7 pré-tratados com EAMB apresentaram aumento de células T helper e citotóxicas, alterando a relação para 1:1. Os resultados mostram que o EAMB pode induzir uma resposta imunogênica específica, atuando como um adjuvante da resposta imune antitumoral. Palavras-chave: Mesocarpo de Babaçu. Células Tumorais MCF-7. Adjuvante Imunológico. ANTITUMOR IMMUNE RESPONSE BY MCF7 TUMOR CELLS PRETREATED WITH BABASSU MESOCARP ABSTRACT: The immunotherapy is a promising strategy for the treatment of cancer. The mesocarp obtained from the fruit of the Babassu Palm (Attalea speciosa) demonstrates immunomodulating activity with relevant perspectives in antitumor activity. The aim of the study was to evaluate antitumoral immune response against tumor cells pre-treated with Aqueous Extract of Mesocarp of Babassu (AEMB). The tu- mor cells MCF-7 were resuspended in EAMB for determination of cell viability. Subsequently, the animals were inoculated with MCF-7 resuspended in saline or EAMB, subcutaneously, on days 0, 5 and 10. On day15, the animals were euthanized and the spleen surgically removed. The splenocyte were characterized by phenotyping with monoclonal antibodies for adherent cells and non-adhrent cells for flow cytometry. Part of non-adherent cells were used for co-culture with MCF-7 for 5 days and then made phenotyping of splenocyte. The cell viability was 97% and there was no difference in the weight of the spleen between the groups. The frequency of adherent cells that express markers IA/IE and Ly-6G were higher in group MCF-7 pre-treated with EAMB when compared with the control. In phenotyping of non-adherent cells was observed a ratio of 1:2 T lymphocytes CD8+ to CD4+ T lymphocytes. However, after 5 days of co-culture with MCF-7, the splenocyte obtained from animals stimulated with MCF-7 pre-treated with EAMB showed increase of helper T cells and cytotoxic, changing the ratio to 1:1. The results show that the EAMB may induce an immunogenic response specifies, acting as an adjuvant of antitumour immune response. KEYWORDS: Babassu Mesocarp. Tumor Cells MCF-7. Immunological Adjuvant. RESPUESTA INDUCIDA POR LAS CÉLULAS TUMORALES MCF7 TRATADAS PREVIAMENTE CON MESOCARPIO “BABAÇU” RESUMEN: La inmunoterapia es una estrategia que fornece buenas perspectivas para el tratamiento del cáncer. El mesocarpio obtenido a partir del fruto del “babaçú” (Attalea speciosa) demuestra actividad inmunomoduladora con perspectivas de actividad antitumoral. El objetivo de este trabajo fue evaluar la respuesta inmune antitumoral contra las células tumorales tratadas previamente con extracto acuoso de mesocarpio de babaçú (EAMB). Las células tumorales MCF-7 fueron suspendidas nuevamente en EAMB para la determinación de viabilidad celular. Posteriormente, los animales fueron inoculados con MCF-7, cultivo en solución salina, o con EAMB, por vía subcutánea durante los días 0, 5 y 10. El día 15, los anima- les fueron sacrificados y el bazo extirpado quirúrgicamente. Los esplenócitos se caracterizaron mediante la prueba fenotípica con anticuerpos monoclonales de células adherentes y células no aderentes por cito- metría de flujo. Parte de las células adherentes fueron utilizadas para um co-cultivo con MCF-7 durante 5 días y luego realizó la prueba fenotípica de los esplenocitos. La viabilidad de las células fue del 97% y no hubo diferencia en el peso del bazo entre los grupos. La frecuencia de células adherentes que expresan marcadores IA/IE y Ly-6G fue mayor en el grupo MCF-7 pre-tratados con EAMB en comparación con el control. En la prueba fenotípica de las células adherentes se observó una proporción de 1:2 linfocitos T CD8+ con respecto a los linfocitos T CD4+. Sin embargo, después de los 5 días de co-cultivo con MCF-7, los esplenocitos obtenidos a partir de animales estimulados con MCF-7 pre-tratados con EAMB mostraron aumento de células T CD4+ y TCD8+, cambiando la proporción de 1:1. Los resultados muestran que la EAMB puede inducir una respuesta inmunogénica especifica, actuando como un adyuvante de respuesta inmune antitumoral. PALABRAS CLAVE: mesocarpio. Células tumorales MCF-7. Adyuvantes inmunológicos.

This research investigates relations between communication and the development of family farmers from the Pontal do Paranapanema region (state of São Paulo), mainly in the municipality of Teodoro Sampaio. Family agriculture in this municipality is represented basically by beneficiaries the Agrarian Reform program. The main hypothesis is that communication contributes positively to the development of those family farmers. Thus, this study aimed to understand communication practices of these farmers and relate them with the development of their families. Quantitative and qualitative research methods were used. Development proxy is understood as the combination between the family living conditions and production. Among the main results, it was found that the effect of communication for "life and production conditions" increases as farmers at superior levels of "development" are analyzed; thus the main hypothesis should not be rejected for those farmers with higher development condition. For the others, communication did not have the same effect because many settled families are not focused on agricultural activities. The main suggestion is to improve ways for producers and professionals from public services related to them to access information.

In this work we report a systematic study on the influence of the chemical nature of silver precursors on the formation of glass-ceramics from oxide glasses. Thermal, structural and optical properties were analyzed as a function of the glass composition. Controlled crystallization was achieved by thermal treatment of the samples above glass transition. The influence of time of treatment on both nanoparticle growth and optical properties of the samples was studied by transmission electron microscopy and UV-Vis spectroscopy, respectively. Results showed that only glasses containing AgCl and AgNO3 led to glass-ceramics growth after thermal treatment.

JUSTIFICATIVA E OBJETIVOS: A preocupação de estar diante de uma via aérea difícil trouxe à tona a necessidade de se desenvolverem testes preditivos de intubação difícil. Tais testes foram, primariamente, desenvolvidos para populações adultas. Nos pacientes pediátricos, os estudos existentes sempre trataram de pacientes com malformações congênitas, politraumatizados e recém-nascidos. O objetivo deste trabalho foi verificar, em pacientes na faixa etária de 4 a 8 anos, a aplicabilidade do teste preditivo de intubação difícil mais comumente utilizado em adultos, o índice de Mallampati, correlacionando-o com o índice de Cormack-Lehane. MÉTODO: Foram estudados 108 pacientes com idades entre 4 e 8 anos, ASA I, sem quaisquer tipos de malformações anatômicas, síndromes genéticas ou déficits cognitivos. Os pacientes foram submetidos, durante a avaliação pré-anestésica, ao índice de Mallampati. Após a indução anestésica, realizava-se a avaliação do índice de Cormack-Lehane. Nos testes estatísticos p < 0,05, foi considerado significativo. RESULTADOS: O índice de Mallampati apresentou correlação significativa com o índice de Cormack-Lehane. A sensibilidade e a especificidade do índice de Mallampati foram, respectivamente, de 75,8% e 96,2%, mas o intervalo de confiança da sensibilidade foi muito grande. CONCLUSÕES: O índice de Mallampati se mostrou aplicável em crianças de 4 a 8 anos.

Este trabalho tem por objetivos caracterizar e comparar a taxocenose de peixes de dois ambientes aquáticos distintos dentro de uma mesma bacia hidrográfica: a praia das Pombas (lago Guaíba) e a lagoa Negra, ambos no Parque Estadual de Itapuã, Rio Grande do Sul. Foram analisados aspectos que incluem a composição quali-quantitativa da ictiofauna. Para tanto, foram utilizados índices ecológicos e de abundância, sendo avaliados espacial e temporalmente e verificando se ocorre relação entre a estrutura da taxocenose destes locais e as variáveis ambientais. Foram amostradas 61 espécies no total, sendo a riqueza a mesma nos dois ambientes (44 espécies). Os dois ambientes estudados apresentam características peculiares, refletindo na composição de espécies de cada um destes locais. Foi possível observar que o padrão de distribuição da taxocenose de peixes estudada nos dois ambientes é sazonal, uma vez que a abundância, a biomassa e a diversidade foram mais elevadas nos meses mais quentes do ano, ou seja, primavera e verão. A temperatura e o fotoperíodo foram os principais fatores que influenciaram na distribuição da fauna de peixes da praia das Pombas e na lagoa Negra.This paper characterizes and compares the taxocenoses of fish from two different aquatic environments within a basin hidrographyc: the Praia das Pombas (Lago Guaíba) and the Lagoa Negra, both in the Parque Estadual de Itapuã, Rio Grande do Sul, considering quali-quantitative composition of the ichthyofauna. Ecological and abundance indexes were evaluated in both spatial and temporal contexts, checking that occurs relationship between the structure of taxocenose these sites with environmental variables. We sampled a total of 61 species, with the richness the same in both locations (44 species). Both environments showed peculiar characteristics that reflected on the fish fauna in each location. It was observed that the pattern of distribution of the taxocenoses of fishes studied in the two environments is seasonal, since the abundance, biomass and diversity were higher in the hottest months of the year, spring and summer. The temperature and day-length the main factors that influenced in the distribution of the fish fauna of the Praia das Pombas and Lagoa Negra.

This work describes the development of a home-made capillary electrophoresis (CE) system based on the capacitively coupled contactless conductivity detection (C4D) for the separation of the metallic species Zn2+, Cr3+, Pb2+, Cd2+, Co2+, Cu2+, Ni2+ e Tl+. A background electrolyte composed of MES/Histidine 0,02 mol L-1 (pH 5.0) was optimized for the separation of the metallic species by using organic solvents and complexing agents as additives. The system allowed the determination of the metallic species using MES/Histidine 0,02 mol L-1 and methanol 5% (pH 5.0) as a background electrolyte, 15 kV separation voltage and hydrodynamic injection by gravity.

A fim de determinar a prevalência de transtornos mentais em uma amostra de pacientes de um hospital geral e sua relação com a denominação religiosa e religiosidade, foram investigados 253 pacientes internados no Hospital das Clínicas da Universidade Estadual de Campinas por intermédio de um questionário sócio-demográfico e um instrumento para diagnóstico psiquiátrico (MINI-Plus). A maioria dos pacientes era católica (63,2%; n = 177); seguidos dos evangélicos pentecostais (20,4%; n = 57); dos "sem-religião" (7,5%; n = 21); espíritas (4,3%; n = 12) e protestantes históricos (2,3%; n = 8). Consideraram-se muito religiosos 43,2% (n = 116), religiosos 46,9% (n = 129), pouco religiosos 9,8% (n = 27), não religiosos 1,1% (n = 3). A filiação religiosa evangélica e maior freqüência a cultos relacionaram-se à menor freqüência de problemas com álcool. É possível que a filiação religiosa evangélica exerça uma ação inibidora na ocorrência de transtornos relacionados ao álcool. Indivíduos muito religiosos ou pouco/nada religiosos apresentaram maior prevalência de transtorno bipolar. A dimensão intensidade da religiosidade revelou-se modestamente associada à prevalência geral dos transtornos, especialmente ao transtorno bipolar. É razoável que situações extremas (de muito ou reduzido envolvimento) relacionem-se a tal achado, relacionando tanto a busca exacerbada ou o afastamento da religiosidade com estados mentais alterados.In order to evaluate the prevalence of psychiatric disorders in a Brazilian general hospital and their association with religious denomination and religiosity, 253 inpatients were interviewed. A socio-demographic questionnaire and an instrument for diagnosis of mental disorders (MINI-Plus) were applied. Distribution of religious denominations was: Catholic 63.2% (n = 177), Evangelical Protestant 20.4% (n = 57), Spiritist 4.3% (n = 12), traditional Protestant 2.3% (n = 8), and "no religion" 7.5% (n = 21). Degree of religiosity was: very religious 43.2% (n = 116), religious 46.9% (n = 129), hardly religious 9.8% (n = 27), and not at all religious 1.1% (n = 3). Evangelical (Pentecostal) religious affiliation and frequent attendance at worship services were associated with fewer alcohol problems. Membership in an Evangelical (Pentecostal) church may thus have an inhibitory effect on alcohol dependence or abuse. Intensity of religiosity was moderately associated with overall prevalence of disorders, especially bipolar disorder. It is reasonable to conclude that extreme situations (very intense versus very limited religious participation) are related to this finding, associating both an exacerbated pursuit of religion and alienation from it with altered mental states.

The yields and chemical compositions of the essential oils obtained by steam distillation of the fresh and dried (30 and 40 ºC) leaves, stems and roots of Tanaecium nocturnum are reported. The identification and quantification of the volatile constituents were accomplished by GC/MS and GC/FID, respectively. The essential oils obtained from the various parts of the plant were constituted mainly of benzaldehyde. Large losses and variations in the quantities of the components during the drying process were observed. The presence of mandelonitrile in higher concentration in the stem and roots indicates that this species produces cyanogenic glycosides.

Through two complementary and exploratory studies – one qualitative and one quantitative – this research aims to understand the ways in which lower-middle-class families in Brazil manage their household finances. The study proposes an integrated framework that brings together various previously disconnected theoretical fragments. Based on a survey with a sample of 165 lower-middle-class female consumers of a retail company in São Paulo, we explored and tested, via a quantitative study, how antecedents such as personal characteristics affect the financial management process, as well as its consequences, either negatively as defaults or positively as savings. The model calibration and analysis were derived from a series of regression analyses. The results revealed the mediator role that financial management plays in the relationship between personal characteristics and defaults and savings. Compared to previous studies with consumers of more affluent countries, we identified peculiar findings among Brazilian lower-middle-class consumers: inadequate attention to control, weak or no focus on short- or long-range planning, widespread absence of budget surplus, and influence of critical events on episodes of default.

En el presente artículo se informa sobre los primeros resultados del sitio Aquihuecó, valle del Curi Leuvú, en Norpatagonia Argentina. El hallazgo corresponde a un número mínimo de 32 individuos asociados a material arqueológico. El sitio cuenta con un fechado de 3.650 ± 70 años AP (LP-1418).This paper reports the first results from the Aquihuecó archaeological site, at the Curi Leuvú valley, Northern Argentinean Patagonia. This site consists of at least 32 skeletons associated to archaeological remains. The site has been dated to 3.650 ± 70 years BP (LP-1418).

A flow system procedure for spectrophotometric determination of ascorbic acid in drugs based on [Fe3+(SCN-)n]+3-n complex decomposition by reduction is described. The flow network was constituted by a set of three-way solenoid valves, controlled by a microcomputer running a software wrote in QuickBasic 4.5 language. The feasibility of the procedure was ascertained by determining ascorbic acid in drug samples with mass ranging from 0.0018 up to 0.0180 g. The results showed an agreement of about 7% when compared with recommended method. Other profitable features such as a standard deviation of 1.5% (n = 7) and a throughput of 120 determinations per hour was also achieved.

A method is proposed for the determination of the moisture content of aromatic plants. This method is based on the co-distillation of the starting material in a modified Clevenger apparatus with four organic solvents (toluene, cyclohexane, dichloromethane and carbon tetrachloride). The results were compared with those obtained by oven drying at 105 ºC and steam distillation of the essential oil. The efficiencies of the methods were shown to be equivalent. The solvent distillation method was more practical, especially with respect to operating time (2 h).

Abstract Background Transversus abdominis plane (TAP) block is useful in reducing post-operative pain in laparoscopic nephrectomy compared to placebo. The purpose of this work is to compare post-operative pain and recovery after TAP block or trocar site infiltration (TSI) in this surgery. Methods A prospective, single blinded study on patients scheduled for laparoscopic nephrectomy. Patients were assigned to two groups: TSI Group: trocar site infiltration at the end of surgery; TAP Group: unilateral ultrasound-guided TAP block after induction. Sevoflurane and remifentanil, in a target controlled infusion mode, were used for maintenance of general anesthesia. Before the end of surgery paracetamol, tramadol and morphine were administered. Visual analogue scale (VAS 0-100 mm) at rest and with cough was applied in three moments: in recovery room (T1 at admission and T2 before discharge) and 24 h after surgery (T3). Pain scores with incentive spirometer were also evaluated at T3. In recovery, morphine was administered as a rescue drug whenever VAS > 30 mm. Time to oral intake, chair sitting, ambulation and length of hospital stay were evaluated 24 h after surgery. Statistical analysis: Student's t-test and Chi-square test, and linear regression models. A p-value < 0.05 was considered significant. Data are presented as mean (SD). Results Forty patients were enrolled in the study. The primary outcome variable, VAS pain scores did not show a statistical significant difference between groups (p > 0.05). VAS at rest (TAP vs. TSI groups) was: T1 = 33 ± 29 vs. 39 ± 32, T2 = 10 ± 9 vs. 17 ± 18 and T3 = 7 ± 12 vs. 10 ± 18. VAS with cough (TAP vs. TSI groups) was: T1 = 51 ± 34 vs. 45 ± 32, T2 = 24 ± 24 vs. 33 ± 23 and T3 = 20 ± 23 vs. 23 ± 23. VAS with incentive spirometer (TAP vs. TSI groups) was: T3 = 21 ± 27 vs. 21 ± 25. Intraoperative remifentanil consumption was similar between TAP (0.16 ± 0.07 mcg.kg-1.min-1) and TSI (0.18 ± 0.9 mcg.kg-1.min-1) groups. There were no differences in opioid consumption between TAP (4.4 ± 3.49 mg) and TSI (6.87 ± 4.83 mg) groups during recovery. Functional recovery parameters were not statistically different between groups. Conclusions Multimodal analgesia with TAP block did not show a significant clinical benefit compared with trocar site infiltration in laparoscopic nephrectomies.

Twenty-eight strains isolated from dog clinical samples identified as Staphylococcus pseudintermedius by mass spectrometry (MALDI-TOF) were studied to assess antimicrobial susceptibility by the diffusion method and clonal relationship by pulsed field gel electrophoresis (PFGE). Methicillin resistance (3/28 isolates; 10,7%) was evaluated by mecA PCR. Fifteen strains (53.6%) were resistant to at least one of the antibiotics tested, and eleven of them (39.3%) showed multiple resistance (3 or more antimicrobial families). Eleven isolates (39.3%) were resistant to erythromycin due to the presence of ribosomal methylase ermB, whereas clindamycin inducible resistance was not detected. Twenty-seven (27) clonal types were differentiated by PFGE, suggesting high clonal diversity. We emphasize that the finding of multiresistant S. psedintermedius strains is an emerging problem to be considered in veterinary diagnostic laboratory treatment of canine infections and in public health settings., (Copyright © 2015 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.)

Background and Objectives: The concern of facing difficult airways brought the need of developing predictive testing for difficult intubation. Those tests were developed primarily for adult populations. In pediatric patients studies always focus on patients with congenital malformation, polytraumatized, and newborns. The objective of the present study was to determine the applicability of the predictive test used more often in adults, the Mallampati index, in patients 4 to 8 years old, correlating it with the Cormack-Lehane index., Methods: One hundred and eight patients 4 to 8 years of age, ASA I, without any type of congenital malformation, genetic syndromes or cognitive deficits were evaluated. The Mallampati index was applied to patients during the pre-anesthetic evaluation. Evaluation of the Cormack-Lehane index was performed after anesthetic induction. A p<0.05 was considered significant., Results: The Mallampati index showed a significant correlation with the Cormack-Lehane index. The sensitivity and specificity of the Mallampati index were 75.8% and 96.2% respectively, but the sensitivity showed a wide confidence interval., Conclusions: The Mallampati index was proven to be applicable in children 4 to 8 years old., (Copyright © 2011 Elsevier Editora Ltda. All rights reserved.)

Background: The relevance of the remodeling pattern in the model of rats exposed to cigarette smoke is not known., Objective: Analyzing the presence of different remodeling patterns in this model and its relation with the ventricular function., Methods: Smoking rats (n=47) have been divided according to the geometry pattern, analyzed by echocardiogram: normal (normal mass index and normal relative wall thickness), concentric remodeling (normal mass index and increased relative wall thickness), concentric hypertrophy (increased mass index and increased relative wall thickness) and eccentric hypertrophy (increased mass index and normal relative wall thickness)., Results: Smoking rats presented one of the following geometry patterns: normal pattern, 51%; eccentric hypertrophy; 32%; concentric hypertrophy, 13% and concentric remodeling, 4%. The normal and eccentric hypertrophy groups presented smaller ejection fraction values and fractional shortening than the concentric hypertrophy group. Thirteen animals (28%) presented systolic dysfunction detected by the ejection fraction and by fractional shortening. In the single regression analysis, geometry patterns and mass index could not predict ventricular dysfunction (p<). On the other hand, the increased relative thickness of the wall could predict ventricular dysfunction in the single regression analysis (p<0.001) and in the multiple regression analysis after adjustment to the mass index (p=0.003)., Conclusion: Rats exposed to cigarette smoke presented one of the four different remodeling patterns. Among the geometric variables analyzed, only the increased relative thickness of the left ventricle wall could predict ventricular dysfunction in this model.

Background: The mechanisms involved in the biggest remodeling caused by the post-infarct beta-carotene are unknown., Objective: To analyze the role of lipoperoxidation in the ventricular remodeling after infarct of the myocardium in rats supplemented with beta-carotene., Methods: Rats were infarcted and divided into two groups: C (control) and BC (500mg/kg/regimen). After six months, echocardiogram and biochemical evaluation were performed. The t test was used, with 5% significance., Results: The animals from BC group presented highest means of the diastolic (C = 1.57 +/- 0.4 mm(2)/g, BC = 2.09 +/- 0.3 mm(2)/g; p < 0.001) and systolic (C = 1.05 +/- 0.3 mm(2)/g, BC = 1.61 +/- 0.3 mm(2)/g; p < 0.001) areas of LV, which were adapted according to the rat's body weight. The systolic function of LV, evaluated by the area variation fraction, was lower in the animals supplemented with beta-carotene (C = 31.9 +/- 9.3%, BC = 23.6 +/- 5.1%; p = 0.006). The animals supplemented with beta-carotene presented higher values of the E/A relation (C = 2.7 +/- 2.5, BC = 5.1 +/- 2.8; p = 0.036). No differences were found between the groups concerning the cardiac levels of the GSH (C = 21 +/- 8 nmol/mg of protein, BC = 37 +/- 15 nmol/mg of protein; p = 0.086), GSSG (C = 0.4 (0.3-0.5) nmol/g of protein, BC = 0.8 (0.4-1.0; p = 0.19) of protein; p = 0.246) and lipoperoxides (C = 0.4 +/- 0.2 nmol/mg of tissue, BC = 0.2 +/- 0.1 nmol/mg of tissue; p = 0.086)., Conclusion: The highest remodeling in infarcted rats supplemented with beta-carotene does not depend on the lipoperoxidation.